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Right ventricular third heart sounds

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

A right ventricular third heart sound is maximal at the lower left sternal edge on inspiration. It is never a normal phenomenon.

Possible causes include:

  • right heart failure
  • tricuspid regurgitation
  • volume overload - right ventricular preload - from an atrial septal defect
  • constrictive pericarditis

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